Which of the following element determine whether a compound is organic or inorganic

A. Oxygen

B. Hydrogen

C. Nitrogen

D. Carbon

If it says choose 2 or all that apply to the question then it would be B. Hydrogean and C. Carbon because if it had carbon and hydrogean atoms together you can see if it's organic and if you don't see it then it's inorganic. Also, if it says choose one answer then it's D. Carbon (Your Welcome